US3894172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicable telephone cable in a common sheath
Assignee: General Cable Corp
•
Filing: 1973-11-06
•
Granted: 1975-07-08
•
Expires: 1993-11-06
Abstract
Abstract This communication cable for telephone use has comparatively small numbers of pairs with the conductors of each pair twisted together with different lays and the pairs are assembled into shielded units. These units, which are preferably of the same construction as one another, are assembled in a twisted cable core with a shield around the core and spaced from the units, and a plastic jacket, of conventional construction, covering the shield.
Inventors
- 👤 Ludwik Jachimowicz
- 👤 Jerzy Adam Olszewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:51
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/02; H01B11/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
A communication cable including in combination a number of conductor pairs, each of which includes two conductors twisted together along a course which is a helix, and each pair having the pitch of its helix different from that of the other pairs, the helix differences being greater than 0.15 inch, means holding the pairs bundled together in a unit, a conducting shield around the unit, a plurality of like units shielded from one another by their respective shields and cabled together to form a core for the cable, and a common enclosure surrounding all of the units and holding them together in the communication cable.
Claim 2
Dependent Claim
105 words
A communication cable including in combination a number of conductor pairs, each of which includes two conductors twisted together along a course which is a helix, and each pair having the pitch of its helix different from that of the other pairs, the helix differences being greater than 0.15 inch, means holding the pairs bundled together in a unit, a conducting shield around the unit, a plurality of like units shielded from one another by their respective shields and cabled together to form a core for the cable, and a common enclosure surrounding all of the units and holding them together in the communication cable.
Claim 3
Dependent Claim
37 words
The communication cable described in claim 1 characterized by all of the shields of the units having an outer covering by which the shields are insulated from one another and each of said shields being individually grounded.
Claim 4
Dependent Claim
24 words
The communication cable described in claim 1 characterized by all of the units being of the same construction and having the same helix pitches.
Claim 5
Dependent Claim
44 words
The communication cable described in claim 1 characterized by the common enclosure being an overall conducting shield, and means holding the units together to form the core of the cable including a wrap by which the overall conducting shield is insulated from the units.
Claim 6
Dependent Claim
24 words
The communication cable described in claim 4 characterized by the overall shield being made of metal and insulated from the shields of the units.
Claim 7
Dependent Claim
29 words
The communication cable described in claim 1 characterized by the shield of each unit being a metal strip folded longitudinally around the bundle of pairs and covered with insulation.
Claim 8
Dependent Claim
46 words
The communication cable described in claim 1 characterized by the pairs of each unit being cabled by twisting them together, and a foamed jacket locking said pairs in their relation to one another to prevent distortion of their helixes during processing and installation of the cable.
Claim 9
Dependent Claim
29 words
The communication cable described in claim 7 characterized by the foamed jacket being an extrudate covering the cabled pairs of the unit under the conducting shield of the unit.
Claim 10
Dependent Claim
35 words
The communication cable described in claim 1 characterized by the cable being connected in a communication line with some of the units transmitting messages in one direction and others transmitting messages in the opposite direction.
Claim 11
Dependent Claim
48 words
The communication cable described in claim 1 characterized by each of the units being in effect an individual cable with a metal shield insulated from the shields of the other units, said shields being continuous through cable splices and being carried at terminations into the housings of repeaters.
References Cited (Backward Citations)
US3025656A
Cited
US3099703A
Cited
US3109879A
Cited
US3102160A
Cited
US3344228A
Cited
US3271508A
Cited
US3622683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |